Celkon A20 vs LG KT770

Compare recorded specifications, size and practical differences.

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Key differences

Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

  • Screen diagonal

    KT770: 1.2 in smaller diagonal

    A20:
    4 in
    KT770:
    2.8 in
  • Release year

    A20:
    2013
    KT770:
    2009

Physical size

Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

  1. 1. A20

    Height:
    Unknown
    Width:
    Unknown
    Depth:
    Unknown
    Weight:
    Unknown

    Unavailable dimensions are omitted from the drawing.

  2. 2. KT770

    Height:
    111 mm
    Width:
    51.5 mm
    Depth:
    15.8 mm
    Weight:
    Unknown

Screen size

Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

  1. 1. A20

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²
  2. 2. KT770

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    22.3 cm²

A20 has approximately 104.1% more rectangular screen area than KT770.

Memory variants

Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

A20: Original memory entry

256 MB · 512 MB RAM

KT770: Original memory entry

120 MB

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. A20

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (dedicated slot)

2. KT770

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details microSD · up to 16 GB (dedicated slot)

Battery capacity

Capacity is not battery life. No endurance test is implied.

Recorded battery capacity

Bars start at zero and share a scale within this chart.

  1. 1. A20

    1500 mAh

    +550 mAh versus KT770

  2. 2. KT770

    950 mAh

Specifications

Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

1. A202. KT770

Everyday essentials
Everyday essentials — specifications for A20, KT770.
SpecificationA20KT770
Dimensions (HxWxD)
  • Х Х mm
  • 111 Х 51.5 Х 15.8 mm
Weight
  • 0 g
  • 0 g
Technology
  • TFT
  • TFT
Screen size
  • 4" inch
  • 2.8" inch
Screen resolution
  • 480 x 800 px
  • 240 x 400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 256 MB
  • 512 MB RAM
  • 120 MB
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD
  • up to 16 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1500 mAh
  • Li-Ion
  • 950 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.2.0 (Jelly Bean)
  • Symbian OS 9.3 Series60 rel. 3.2.3
Headphone jack
  • Yes
  • No
Display
Display — specifications for A20, KT770.
SpecificationA20KT770
Touchscreen
  • capacitive touchscreen
Unknown
Display colors Unknown
  • 256K
Screen area
  • 45.5 cm2
  • 22.3 cm2
Screen format
  • 5:3 (height:width)
  • 5:3 (height:width)
Screen to body ratio Unknown
  • 39.0%
PPI /points per inch/
  • 233 PPI
  • 167 PPI
Camera and Video
Camera and Video — specifications for A20, KT770.
SpecificationA20KT770
Rear camera, main
  • 3.15 MP
  • Single
  • 5 MP
  • Single
Camera specs
  • 3.15 MP
  • 5 MP
  • AF
Functions Unknown
  • LED flash
Video
  • Yes
  • 480p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • VGA
  • VGA videocall camera
Performance
Performance — specifications for A20, KT770.
SpecificationA20KT770
Processor CPU
  • Dual-core 1.2 GHz
Unknown
General specs
General specs — specifications for A20, KT770.
SpecificationA20KT770
Release date
  • 2013
  • August
  • 2009
  • February
Colors
  • Black
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 60 EUR
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for A20, KT770.
SpecificationA20KT770
SIM card
  • Dual SIM (Mini-SIM)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed
  • Yes
  • 384 kbps
  • HSPA 7.2/0.384 Mbps
GPRS
  • Class 12
  • Yes
Edge
  • Class 12
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11 b/g
GPS
  • No
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • Proprietary
Bluetooth
  • Yes
  • 2.0
Harmful irradiation
  • SAR EU - 0.88 W/kg (head) 0.60 W/kg (body)
  • SAR - 0.36 W/kg (head) 0.75 W/kg (body)
Music and Audio
Music and Audio — specifications for A20, KT770.
SpecificationA20KT770
Radio Unknown
  • No
Others Unknown
  • Touch-sensitive navigation keys
Other features
Other features — specifications for A20, KT770.
SpecificationA20KT770
Dop
  • Sensors Proximity
  • gyro
  • WMV/RV/MP4/3GP player -MP3/WMA/WAV/RA/AAC/M4A player -Organizer -Document viewer (Word
  • Excel
  • PowerPoint
  • PDF) -Voice memo -Predictive text input